Attachment For External Heatsink Mounting - YASKAWA L1000A Technical Manual

Model
CIMR-L
4A0150 CR6L-400
4A0180 CS5F-600
4A0216 CS5F-600
4A0260 CS5F-600

◆ Attachment for External Heatsink Mounting

An external attachment can be used to project the heatsink outside of an enclosure to ensure that there is sufficient air
circulation around the heatsink. Contact a Yaskawa sales representative or Yaskawa directly for more information on this
attachment.
◆ EMC Filter Installation
This drive is tested according to European standards IEC61800-5-1 and complies with the EMC guidelines.
EMC Filter Installation on page 415
◆ Installing a Motor Thermal Overload (oL) Relay on the Drive Output
It is generally not necessary to install a motor thermal overload relay when operating a single motor from a single AC
drive. The drive has a UL recognized electronic motor overload protection built into the drive software. However, when
utilizing a thermal overload relay, follow the guidelines below.
Note: The relay should shut off main power on the input side of the main circuit when triggered.
■
General Precautions when Using Thermal Overload Relays
The following application precautions should be considered when using motor thermal overload relays on the output of
AC drives in order to prevent nuisance trips or overheat of the motor at low speeds:
1. Low speed motor operation
2. Use of multiple motors on a single AC drive
3. Motor cable length
4. Nuisance tripping resulting from high AC drive carrier frequency
Low Speed Operation and Motor Thermal oL Relays
Generally, thermal relays are applied on general-purpose motors. When general-purpose motors are driven by AC drives,
the motor current is approximately 5% to 10% greater than if driven by a commercial power supply. In addition, the
cooling capacity of a motor with a shaft-driven fan decreases when operating at low speeds. Even if the load current is
within the motor rated value, motor overheating may occur. A thermal relay cannot effectively protect the motor due to
the reduction of cooling at low speeds. For this reason, apply the UL recognized electronic thermal overload protection
function built into the drive whenever possible.
UL recognized electronic thermal overload function of the drive: Speed-dependent heat characteristics are simulated
using data from standard motors and force-ventilated motors. The motor is protected from overload using this function.
Using a Single Drive to Operate Multiple Motors
Turn off the electronic thermal overload function. Please refer to the appropriate product instruction manual to determine
which parameter disables this function.
Note: The UL recognized electronic thermal overload function cannot be applied when operating multiple motors with a single drive.
Long Motor Cables
When a high carrier frequency and long motor cables are used, nuisance tripping of the thermal relay may occur due to
increased leakage current. To avoid this, reduce the carrier frequency or increase the tripping level of the thermal overload
relay.
YASKAWA ELECTRIC SIEP C710616 38A YASKAWA AC Drive L1000A Technical Manual
Fuse Type
Manufacturer: Fuji Electric
Model Fuse Ampere Rating
400
600
600
600
for details about EMC filter selection and installation.
8.5 Installing Peripheral Devices
Fuse Holder
Model Quantity Model
– – FWH-400A
– – FWH-500A
– – FWH-600A
– – FWH-700A
Fuse Type
Manufacturer: Bussmann
Fuse Ampere Rating
400
500
600
700
Refer to
8
325